Improvement in sheet-reversing apparatus tor printing-machines



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^ 8 sheets-Sheet 2. l S. D'. TUCKER. l Reversing Apparatus' for Printing-Machines.

Sheet- Patentedv Apri 8, 18'? s sheetssheet 4.Y

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fReversving Apparatus' for- Printi11g-IVIIclliImS.v 'No'.l 214,065.l 'Patented April 8, 1 879.'

*Shasta l ssheens-sheete. S.D. TUCKER. Sheet-Reversing Apparatus for lP-rinting-IVIaohi??es.y

' No. 214,065. Patented April 8,1879.

In is!! num-.E5

frauen/Ear.

5 8 Sheets-Sheet 8. 4 S. D.`TUOKBR. i Sheet-'Reversig Apparatus .for Printing-M l''hines.

No.- 214,065. Patented April 8,'1879.

n 0f. m M .E w m. M no l luster-turni ni SfnrET-'IREVERSI/NG" have'invented'certainy new 'and useful Ihrprovernents ingShfeet-Reversin p; Apparatus for the fon October hom oiiagj encerrarj Beit known that 'lfSrErI-IEN i l). TUCKER, 0f the. city, eountynu 'stan-i of New York,

'PrintinglWffshMies; and i dodiereby declare Y .owing specitication, when taken in conneotioil Vwith @the accompanyin drawings, to

Ahea ffulhlclea'r, andA exact4 deseriition ot' the ,ap,paratus, sutlicient' to' eii'able those skilledfiu ...the art: to. makel and' use thefs'auieI y y elevation, Fig.

lnfsaiddrawings, Figure I jrepresents a side 2v a rear-end elevation, Fig. 3 a

z planfvieu,'and-Fig. La longitudinal sectional eleyatiou, ofthe aiyiparatus provided' Witha.

v. feedingdievie'and,snehfsl reet-'oon d uetin g' tapes as .renecessaryto exemplify the inode of its operation. 5, '6, v2,"and 8 are diagrams,

i illustrating` thetufin'ngers; and their actuatl, iig yineolianisnisindifferent positionsA of their u operatiouin iriauipulatin a sheet. 4-zshimfs,in aplan View and Aend elevations, the

twin lingers and ,their` lnountings removedk fromtheeyliuder2d ,1d is a front elesectional l vieivsf'illustrating the-twin lingers 1u closed and open 1 )osit-ions.` F1' gs. 1 3 and 14.

illustrate modified forms ofv the sheet-carrier Hwhichy feooperatesgwitli the reversing-cylinder.-

"flreversingapparatus Witha printing-machine f adapted toreceive and perfeet sheets and Fig.

reversing' apparatus with @provided-With niechanis out into sheets'and saidy sheets perfected.. flhisinventionrelatesto thatolass ofineehaw, ismsknown -as v 4slieet-reversin g apparatuses,7 n Whiehj' are adaptedv to,-` operate in conjunction fvith'" the "impression ,Cylinder or cylindersof a println machine,` and, "r'eeeiving a` sheet printed on :g 'one side-z by the latter, reverse the saine-"and 'return it tothelprintin g-niachine, to

16 illustrates'l the j combination of :said sheetja printing-machinei whereby a Wehis,

` piled, folded, or undergofhand.-manipulationj land the invention"consistsi'n-...an-y improved lconstruction ot' the mechanisms. eOllStituting,

sheet-reversin g apparatus auch combina-t,

i ri-Inn"n."gruoirnug"ouin-EW rest, s. Ys l i Ar'PARArnS-ro ralnrlNGlM-cmntfs.

tions thereof, as willlhemore specilicallyherc- -ina'fter pointed out and distinctly `claimed.

The principal mechanism of this apparatus is a reversing-eylinder, 20, which is. provided with twinv lingers 24, whereby 'a sheet fed he'- neath itis seized bythe; tail. end, carried over, jandjdelivercd tronrthef top of said cylinder, thus lraving kits direction of -travel reversed; and its tail end rendered its loadingend.- Yfitlr this reversing-cylinder is 'combined a sheeteonducting Carrier, 30, provided with v{.gripers I 19, whereby sheets fed .into the apparatus are vseized 'by their heads, conducted out-.from under "the"reversing-cylinder 20 into vsuoli posi. tion that their tail lends may be seized by the ,twin nge-rs '14. and carried over the top ot' the cylinder 30, the gripers' 19 heinglopened at `the proper time to release' them'. y a, r

When provided 'with suitablemechanism for ffeedingsheets to and delivering thein from it,

this 'apparatus will, by its manipulation thereot`,`eause each sheet to he reversed,so that 'its' rear or tail end hecomes'theleading end,

whereby, when combined with a'priuting-ma chine having au impression cylinder orcyllnders, a'sheet-Wliicli has been printed.'upon one -side thereby may loereversedv and he l'11u-interi upon the opposite side iii passing once through -thevmaehineryz In order that the reversing' apparatus 'm ay be more readily understood, the 'structure of its parts and their operation will lirst-he described, and `th'elrit's `operation in Connection with printing mechanisms explained."

` To aid'suoh description, the reversing appa- ',ratusis' exemplitled'i'n Figsl-to il' as -supplied with an interniittingly-rcciproeatlng lteeding,

mechanism, whereby sheets are'fedto it at shell intervals ofltime'that they shall-'he properly.fmanipulated, which feeding" 'mechanism will,'in ypractieahe supplanted by one connected directly with 'the printing-machine and automatically operated by it ,as` will fully here` lluefter appear.

The reversingfeylihder L Ois mounted upon a toothed irh'eeh 46,' shwn" in .these' illustra-l tions asjdriven hy' means of'an intermediate piniout, from a toothed Wheel', '4T-,ion the shaft of posite ends have their lar head 24 of the rock-arm,

rock-arm 7 runs in' the grooveof ast-ationary` driven in unison by toothed wheels 47 52. -Its twin ngers 2 4 project, respectively, from rocking shafts 3 5, which are. geared together by plnions 6 8, and journaledV in a differen-l tially-rotating frame, 40, both shafts lturning at one end in a projection, 22,

bearin gs in the circuframe' 40, the shaft 5 projecting through and being -provided with a 7, on its outer end. The endof this cam, 60, -which is fixed to the side frame', and is therebyrocked atpro'per intervals to vibrate the shafts 3 5, and openand close the twin fingers 2 4. A spring, 16, is screwed ou' the frame 40, thevpoint of which, when the fingers are closed, drops into a notch in adisk, 23, o n the shaft 5, and thus keepsl them firmly together whenthe end of the rock-arm. 7 isfree from the grooveyin the cam 60. V

trically upon its outer end, which wheelis-aet-v uated as the cylinder 20 revolves by means ofan intermediate wheel, 11, set eceentrically and movin gloo's'ely upon a stud in the cylinder end,

' which is. driven' by a stationary toothed wheel,

10, thatis fixedtofa sleeve, 43, projecting from the side frame, and embraces the shaf't 2l of the cylinder 20in such a manner that said wheel 10 stands eceentrieally with respect to said shaft 21. These wheels 11 12 are all of the same size, and constitute a train of eccentric gearing, by theoperation of which, as the cylinder is revolved, the frame 40 is rotated with a differential movement that causes the axis or shafts ofthe twin fingers to stand at such appropriat-e. angles with respect to the periphery of'said cylinder as will cause-thc twin fingers attached to them to take the most favorable position to seize'the tail end of the sheet, carry it up,.reverse its direction of travel, and deliver it to the receiving-tapes at the top of the I- cylinder by `an, easy motion' paper of the poorest quality or disarrange the Thus, the frame is so turned that the shafts 3 that will not tear registerof the sheet.

5 of the twin fingers are caused to stand at the angle shown in Fig. 5 at the time when the sheet is about beingseized, and then said frame rotates with a constantly-decreasing'motion until the position shown in Fig. 6 is reached, during which time the rear end of the sheet seized by the twin fingers is being'raised, then increasesits speed gradually until the position Fig. 7 is reached, when the sheet is released, and thereafter further increases its speed until the position Fig. 8 is reached, from which time until the position Fig. 5 is passed and that of Fig. 6 again reached, its m0 'on is constantly while their- 'op-l decreasing, whichv relativ differential speeds of its rotation result from theffact thatwhile the sheet is within the control `of-the'twin fingers the shortest radius of the driving-wheel 10 is in gear lwith the'longer radius of the in termediate 11, thel shortest radius of which is Vat the Sametime in gear with the longest ra-` -dius of the wheel-12, and at other times the longest radinsof the driving-'wheel 10 is geared 'in like manner with the intermediate 11,.th"e

longest radius of which is at .the same time in gear withi the shortest radius of the wheel 12.'

The groove ofthe cam is so shaped that, together with the rotation of the cylinder 20 and the rotative movement of the frame 40, it

-shall cause the twin fingers, thenlrocked wide open, to stand on opposite sides of the .tail of the sheet as they'follow its forward movement,

and when the position Fig. 5 is reached :to

.quicklyclose .upon and seize the same,in which position they arelield by the spring 16.

The Asheet-conducting carrier 30 (shown inf Sheets 1 to 4) consists of endless vbelts '25, of metal, leather, or other suitable material, which ruln over pulleys 27 26, (see Fig. 3,) said pulleys havingcurved recesses 18, into which similar-shaped teeth 28, fastened to the inner surface of the belts, enter, which said pulleys and belts'are driven with uniform speed and in` unison with the cylinder 20 through a pinion,

45, fast on the shaft of pulley 27. and meshing with the toothed wheel 46. These belts each carry a griper,19,.on a spring-seated shaft, which has its bearings in one set or pair ofthe teeth-18, as in Figs.-3, 4. .This gri-per-shaft is vibrated, toppen and close said gripers vat the point of reception of the sheet, by means of a rock-arm, 29,;and a stationary cam, 17, properly supported by a bracket, 5l, and to open and release the sheet by means of asimilar .stationary cam, 3,1, with which said rockarm 29 engages.

The apparatus isprovided with setsof sheetcarryingtapes, as follows: A set, 32, run from the lower feedin g-roller, 50, to the pulleys 33 on the shaft of wheels 26.

Another set, 34, 'run from the upper feeding-roller-LQ, around vthe cylinder 20, under a roller, 35, and ret-urn over a roller, 36; and a set, 38, run from the roller 37 to and return over a roller, 35. These several tapes are kept in place by suitable guides, as 39, and-serve to direct the sheets into and out ofthe apparatus, as will presently appear.

The feeding device consists of `a table, 44, over a portion of the rear end of which a gage, 53, is caused to reciprocate by being attached to the end of a rod, 54, the opposite of which rod is'connected to an arm, 55, fixed on a roek-4 shaft, 56. This shaft is operated bya cam, 59,

'table 44 against the gage 53 will be, at the that ot' Fig.

. minces* Y s proper time of `the reyolntirm of the cylinder 20, carried `into the nip oi the'feeding-rollers 4f) 5o, whichfaidig-.dby the 'tapes 32 34, will deliver its leading` end to the. gripers 190i' 'the sheetm cond noting carrier 30, which gripers are opened toreeeiveand closed to seize said leading` end as it passes onto said carrier by means of the griper-cam ifi, in which movenientfthe gripers enter' recesses Ghentin the perilihery ofthe cylinder 20. The sheet thusl seized and held upon the endless carrier 30 is carried outward thereby, 'the said carrier 30,

cylinder V20, andthe tapes 32 5M moving` inunison with the sheet, and thecylinder 20 during this movement Vmaking that part ot' its -.revolution which carries it -and the mechanisms it-supl'iorts'froin the position of Fie'. `7 to `Mfhenthe tail end of the moving' sheet is l closely'al'iproaching the point atwhiclr the cylinder 20 runs 'in contact with the endless carrierO, the twin 'fingers 2. 4 will, while stand ing, open, as 1n Fig. .S,` be brought upbehiud the sheet, and,following the tail end thereof as `it passes under said cylinder, will close quickl y together and seize the same by means ot "the rotat 'ou otl their frame 40and the aotion upon them of the cam 60, the gripers 19 ot the sheet-comlucting carrierV 3() being` simultaneously opened by the cam 3l yto release the head ot the sheet. -The tail end of' the sheet thus held bythe' twin lingers will be lit'ted thereby, as in Fig. 6, said tingers while 'thus acting being held v,closed by their spring 11i, and swungso as to gradually turn rearward as they moveupward and forwardwiththe cylinder, whereby they make no abrupt bend 1nthe-sheet and slowly change'itsdirec tion ot' travel. NVhen `thesetwin*hngers have v,carried the tail ot' lthe sheet (now its leading endiintothenip otthet'apes 38their rockn arm 7 will cuter the high 'part ot' the groovein the cambi) and quickly open said twin fingers to Irelease the sheet, which', now travel-ing` `in .the reverse directionv to that in which it was received by the reversing-cylinder, will be con- 'y ducted by thetapes 3S 34 and delivered there- (by. lWhile the tail end of said sheet is being" n 4carried by tlre'twin' fingers to the point at ,y which they releaseit, thes'heetconducti'ng carrier 3,() will liave.so,tl.r revolved as to bring` its 4gripers to the pointt'or receivingsheets,

, i and asecond'sheet 'will'l havelbeen fed inward ,in `'proper time for 'its head tol be seized and f the sheet carried'outward by them, and the ftwin-tingers. will bevbrought in proper' time finto aposition for embracing and be caused to close upon Aand seize the tail end of said sheet, land repeat the reversing operation just y described.

yThe sheet-conductin52,` carrier mightbe constructed in the form `ofaV rotating cylinder,

, as in Fig. 13, which cylinder is therein marked 30, while its gripers 19 and their opening-cams 17 and 31 correspond with thelike devices of the carrier 30 shown inf'th'e preceding.' figures. This cylinder 30 will, of course, be geared to runl with theproper surface-speedl relative to that oft-he reversing-cylinder 20, and the cams' 17 31 will be fixed to'the frame-work so as to properly engage the rock-arm of the griperi shaft.

The'sheet-conducting. carrier 30 might also be a rocking frame carrying the erpers 1 2).`

This is'illustrated. in Fig. 14, where the carrier '30 is supported at the ends of vibrating arms 141, tonwhioh timely movements are imparted by a rock-arm, 141, by-means ot' a connecting'- rod, 142, and a cam., 143', of the reversing-cylinder 20. p

The gripers in this moditicatiou consist ot' fixed and movable jaws. lThe lowerV jaws, which are `the movable ones, project from a spring-seated shaft,y 13fo`, which is rockedto open said lower jaws' by means o.t"alever,137,

the tail of which, striking a stop-pin, 13S,

when the carrier 30 is rocked to its rearmost position, is'depressed until .its forward end is engaged by a spring-seated catch-lever, 139, which locks the saidjaws open, as seen in one ot' the detail views. As this `carrier 30'is rocked toit-s foremostmost-ionto meet the head ot' the sheet, the tail of the-catch-lever 139 strikes another stop-pin, 140, whereby the' lever 137 is released andthe gripers are closed upon said sheet, as shown in one ofthedetail views. i'

' The operation of a reversing apparatus thus constructed is to receive a sheet and deliver 'the same with itsdirectiou ot' travel reversed.

Itis therefore, as will be readily apparent, adapted to operate in connection with api-inting mechanism, whereby-sheets printed upon 'one side and directed to'it will be reversed andreturn'ed tothe priming-machine in proper position to be printedupon the opposite side.

In Fig; 15 is shown sofmuch ot'l a rotary or typerevolving'printingmachine as is necessary for the purpose of exiiibiting,` the arrangement and operation ot' this reversing apparati-,1s

' in' connection therewith.

The principal elements of suoli a. printingmachine are a rotatingtype-cylinder, (52, the periphery ot-'which is constructed so as to support prixitingsnrt'aees,as forms ot' movable types or stereotype-plates (55 (S6, and to provide between such lprintingrsurfaces cui-ved finking surfaces or tables li 13.3. Saidrv cyllinder is also furnished with an appropriate" number oft inking mechanisms, (the Itorni-rollers 67 (iSonlylof which arey showin) which are automatically movedl to and from the pcixed to the shaft 21 ,i cyliuilerm from one of which, bythe intermediate wheels, underStoOd that the impression-cylinders are "with a like. surface-speed.

pulleys 50, over pulleys to its impression-cylinders anddelivering them therefrom, all of which is fully illustrated and specilically described in the United States Patentllo.- 5,199, granted to Richard M. Hoe, July 24, h17. v

As here shown, the type-cylinder 62 of such a printing-machine is provided with an inside form` 65, an outside form, 66, interveuinginking-surfaces 13a 135, inlring` apparatuses 67 68, two impressioncylinders, G3 6l, and suitable feeding," land delivering; tapes, with which is combined my improved reversing apparatus.

The reversing-cyliinler is of the same size and russ turn for turn with the impression- 6a, it is driven 145 146, it being 4reared with the cylinder 62, and so as to vrun An ordinary feedtahle, 71,feedingr drop-roller 70, anda doubleaeting; tly, 83, with piling-tables S4 S5, are also illustrated. This type-cylinder 62 may be provided with a duplication of these mechanisms lon the opposite side, as is indicated by the outlines of impression-eylindcrs with 63 and 64.

The. sheet-comlucting tapes, whose bearing,` pulleys or rollers are to be understood as provided with driving" gearuvheels wherever the same. are necessary to drive said tapes, are arcorresponding ranged as follows A set, 13, run from the feedving-cylinder 69, return over pulleys 72; a

set, 14,-runningz; from pulleys 7 3, are returned over pulleys 7 4, except the margin-tapes 15, which run from pulleys 73, around theimpression-cylinder 63, under pulleys 49, over pulleys 50, and return around the endless oarrier 39, over roller 7 4 5 a set, 32, run from the on the shaft of t-he wheels 26, as hereinbefore described; a set, 34, run fromthe pulleys 49, around the reversingcylinder 29, under pulleys 3.5, and return over pulleysh', as hereinbefore described; a set ,38,

run from the pulleys 37 to.and return over pul` le'ys 35, as hereinbefore described, but in this arrangement of them the margin-tapes SS run 'from the pulleys 37 over pulleys 3G, around the impressioircylinder 64, under' pulleys 89,

over roller 78, around roller 77, over roller 76,. and return over roller 79; a set, 86, run from,

pulleys 75 over rollers 78, around roller 77, and return over roller 76; and a set, 87, run from pulleys 80 over rollers 78 and 77, around roller S1', and return over roller 82.

',lhe operation of the mechanisms thus comhined is as follows: A sheet laid in position will be fed into the tapes 13 l-L by the operation ot' the drop-roller 7 9, and be thereby conducted to the nnpression-cylinder 63,1;he'gripers 9 ot which will seize its leadin g front end. 1n passing` around this cylinder the sheetwill be pressed onto the form (i5, and have its inside surt'ace printed, and when released bythe gripers' 9 it will be stripped ott' from the cylin- 'der 63 by the margin-tapes l5 and carried into the tapes 32, 3l, by which it will be conducted to the reversin apparatus and manipulated, as

alternate sheet receives its last described, having a hereinbefore described. W'hen said sheet 'has been reversed its tail end, now become its leadin g end, is delivered to the tape-s 3S 34, which conduct it to the impression-cylinder 64, where it is seized by the gripers 9, and has its unprinted surface rolled in contact with the outside form 66, which is then passing said iinpression cylinder. After having thus been printed or perfected it is released from the `vgripers 9, stripped oft' said cylinder by the margin-tapes S8, and carried into the tapes 86 87, which convey it to the rollers 81 77, -between which it depends until it is swept by the vibrating fly' 83 down onto the piling-table. During this operation-of the reversing apparatus upon'the first sheet, the impression-cylinder 63 will make an idle revolution while the hiking-surface 134 is passing it, and when said impression cylinderl is pressing the second sheet upon the outside form, 6G, the tirst sheet, then reversed, will be approaching the im pression-cylinder G4, aroundwhich itV will be' carried in time to be pressed thereby into contact with the outside form, 66, as it passes said cylinder. rlhus eachform prints as it passes an impression-cylinder, and each'sheet fed into the machine is perfected, and as each inside impression lirst it follows that every other sheet delivered to the 'ily-frame" will have its sides reversed;I but as said ily-frame piles alternate sheets in opposite'direetions it also follows that, as ill us` trated, the sheets piled on the tables-twill have their insides uppermost, and those piled on thentable 85 will have their outsides uppermost. If the forms 65 and 66 are duplicates, as in the case of half-sheets the. sheets will require to be cut in two.

The printing apparatus with which my rever ing` apparatus is combined, as shown in Fie'. 16, is of the same general character as that similar type-cylinder, on one side by four impressioncylinders, 94 95 9G 97, which are' driven at a corresponding surface-speed by being geared thereto, and providedwvith proper inking apparatuses 67 68. Itis,h0wever,provided with 62, surrounded cutting-cylinders S9 90, geared together and 4 driven by a train of wheels, 12b' 127, from a toothed wheel on the impression-cylinder 95, whereby a web of paper may be automatically cuty into sheets, and with a gatheri'ng-cylinder,

`91, provided with a toothed wheel, whereby it is 123, 124, from i driven through a' train of wheels, a toothed wheel on the impression-cylinder 97, which gat-heringcylinder is provided with means whereby it collects successive sheets delivered to it with the same printed side upper-- most and properly delivers them. In this arrangement the reversing-cylinder is driven turn for turn with the impression-@yhnders by being geared through wheels 147 14S to one of them, 9G. The several' tapes are driven in proper directions and time by suitable spur-wheels on the pulley-shafts, and run as follows A set, 192, run from pulleys 103, in contact with imor supplements,

pression-cylhnler l, and return around pulleys 101. A set, 133, run from pulleys 105, around pulleys 106, except the margin-unies of` the set,

which pass on around the impression-eylinden 0-1, under-the pulleys 1.07, and `then rejoin the remainder of the tapes, 133. They then all -pass together around the roller 00 and over the pulleys 108, the murrgin tapes passing` around the impressioncylinder 05, under the .pulleys 11.0, and there again rejoin the reinainderot' the set. They then all pass around rollerslll, 1.12, 113, and 50, thence over pulleys on the shatt of wheels 26 of the endless lcarrierlfl, and return to pulleys 105; A set7 132, run around pulleys 107roller90, and pulleys 1.08. i A set.l 1Il1,puss over pulleys 1.1.0,roll-y ers 111, 112,113, and 50, run partially around *around impression-eylinder 0T, under pulleys 11S, where they reioin the remainderof the set,

-and all pass over roller 03, around"gathering- I cylinder 0l, over pulleys 02, around roller 121,

and return over roller .1.22. A set, 130, run from pulleys 11-1, and around -roller 101`and pulleys 11.5; and a set, 1.28, run from thepilleys 1 1S, over roller 053, u nder pulleys 9S, orenpulleys 02, around roller 1.20, and return over roller 110; all of which mechanisms may be duplicated on the opposite side oi" the cylinder nfl, as is indicated bythe impression-cylinders there represented.

The cuttingeylinders run turn for turn 'with the impression-cylinders from' which they are driven; but they are of a less diameter hence the tapes 102 1.3.1) travel faster than the paper is supplied bythe cutting-cylinders. These latter do not cut the sheets entirely free from the web, but leave them joined at. several points. The distance from the impressioncylinder to the pulleys 103 105 is such that when the leading; end or a-sleet reachesthe impression-cylluder the partially :made cut has already entered between the. tapes 102v 135%. As soon as a sheet is caught in the nip of the tapes and iinpression-cylinder itpartaires of their speed, and is torn loose from the web and separated a certain distance from it. The sheets thus have a space between them, which is utilized forthe operation of the gripers Sl and switches ot' the gath-ering-cylinder 01..

The gathering-cylinder 91 and the mechanisms with which it is supplied are fully illustrated and described in United States latcut Xo. 102,054, July 10, 1877.

The operation of the mechanisms combined as illustrated in Fig. is as follows: The 'web of paper fromv the roll 100 is passed between the cutting'-cylh'iders S0 90 and entered between the tapes 133 102. lts leading-l printed, and when released from the `e'ripersl) the margin-tapes 1,33 will strip it from the cylinder 01 and conduct it around1 the roller 00, from which itis directed to the gripersfl ol? the cylinder 05. New, the second sheet.

directed 'to'the gripers 9 of the cylinder 91 closely follows the first, and willl meetthe vprintiiigsurfuce,65 and be printed on its inside, and the course of' the first sheet around the roller 00 is of such length that said sheet is delivered to the cylinder in ynoper time to incetfthe torre 05. and be printed. on `its inside by it. Y Thus the first and second sheets will be printed nearly simultaneously upon theiry inside surfaces. As the third and fourth sheets are conducted into lthe machine they are ,manipulated precisely were the-iirst andfsetaind, except that the impressions are made-by the outside form, 00,. and that the third sheetis passed around the cylinder 91, and the second sheet, already printed, is passed around-the cylinder 05 while' the ink. sing; hence it follows re p 'nted upon one side in 'pr seing the cylinders l 05, and thi* they .torni sets ci? tivos, each alternate set receiying their inside'impressions and the other set their outside impressions. 1

As the sheets are released by the gripers il of the oylhider they are stripped ott the saine by the margin-tapes 133, and pass into the elongated passage formed by the tapes 133 131., pulleys 11,0, and rollers 111, 112, 113, and 50, 'which regulates the time at which they must nieetthe reversingeylinder, so that when they are reversed .and conducted to the' iinpressioli-cylinders 00 0T they will 'e inet .and p inted on their second sides by theforms opposite tothe ono that printed their rst side The sheets are kmanipulated by the reversing; apparatus in the same manne as herein bet'ore described, and are conducted to the impression-cylinders 0097, by which they `re eeive their second impressions, or are printed upon their white surfaces, in an order and Vby means opera-ting,r precisely as described with respect to their first' impression. rllhus perfected, they are delivered in succession to the tapes 128 120, which convey them to the gathering-cylinder 91, upon which each successive two sheets of a kind or alternate sets ot' two sheets which arrive with their insides or outsides uppermost are collected together and delivered as a single body, and are conducted between the pulleys 121, and piled by the il y 83 upon one or theother piling-tables84 85, all the sheets receiving their last impression upon I their inside' being piled upon one table, and

those receiving their last impression4 upon their outside being piled upon the other table.

1. A sheetreversing apparatus consisting of a sheet-conducting carrier provided with gripers,wliereby the sheet is moved outward by its head, and areversing-cylinder provided with twin fingers, whereby the moving sheet is seized'by its tail end, carried onto saidl cylinder, and reversed, all substantially as described.

2. The combination, with the sheet-conducting carrier 30 and cylinder 20, of the twin iingers 2 4, their frame 40, and 4the eccentric toothed wheels l0 1l 12, substantially as described. v

fingers 2 4, rotating` frame 40, geared rocking,

shafts 3 5, rock-arm 7 and stationary cam 60, substantially as described.

4. The combination, with the sheet-conducting carrier 30and cylinder 20, of the twin fingers 2 4, frame 40, eccentric wheels 10 1l 12, geared rocking shafts 3 5, rock-arm 7 and stationary cam 60, substantially as described.

5. The combination, with the cylinder 20, ot' the twin lingers 2 4, rotating frame 40, and eccentric toothed wheels l() 11 l2, substantially as described.

6. The combination, with the cylinder 20,

of the twin fingers 2 4, rotatingl frame 40, eccentric toothed wheels 10 11 12, geared rocking shafts 3,5, rock-arm 7, and stationary cam 60, substantially as described. 'i

7 The combination,.with the reversing-cylinder 20 and sheet-conducting 'carrier 30, of

the tapes v32 and 38 34, substantially as de= scribed, y i

8. The combination, with the' reversin; ,1f-eyl inder 20, and sheet-conducting carrier 30, of a rotating type-cylinder and two impression-cylinders, as 95 96, substantially as described.

9. The combination,"with the reversing-cyln inder 20 and sheet-conducting carrier 30, oi' a rotating type-cylinder, four impression-cylin# ders, and a cutting apparatus, 89 90, substantially as described.

l10.-'1he combination, with the' -reversingf 20 and sheet-conducting carrier 30,

cylinder of a rotating type-cylinder, four impressioncylinders, cutting-cylinders 80 90, a gatheriixgcylinder, and a iiy-frame, all substantially as described. f

. In testimony whereof I have signed my name to this specification in the prcsence'of two subscribing witnesses.

p STEPHEN. D.' TUCKER. j

Witnesses: I

H. T. MUNsoN, GEO. H. GRAHAM. 

